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dc.contributor.authorQiu, Y.
dc.contributor.authorBroholm, C.
dc.contributor.authorIshiwata, S.
dc.contributor.authorAzuma, M.
dc.contributor.authorTakano, M.
dc.contributor.authorBewley, R.
dc.contributor.authorBuyers, W.J.L.
dc.contributor.authorBuyers, W.J.L.
dc.date.accessioned2010-01-11T18:48:43Z
dc.date.available2010-01-11T18:48:43Z
dc.date.issued2005-06-01
dc.identifier.citationPhysical Review B (Condensed Matter and Materials Physics) 1 June 2005, vol.71, no.21, pp. 214439-1-8en
dc.identifier.urihttp://jhir.library.jhu.edu/handle/1774.2/33766
dc.description.abstractLa4Cu3MoO12 is a cluster antiferromagnet where copper spin-1/2 trimers form a network of strongly coupled spin trimers. The magnetic properties of this material have been examined using magnetic neutron scattering. At low temperatures, excitations from the ground state are observed at 7.5(3) meV and 132.5(5) meV. An additional peak in the neutron scattering spectrum, which appears at 125.0(5) meV on heating, is ascribed to a transition between excited states. The wave vector and temperature dependence of the inelastic magnetic scattering cross section are consistent with intratrimer transitions. Magnetic neutron diffraction reveals antiferromagnetic order below TN=2.6 K with a wave vector (½00). The ordered magnetic structure is described as intertrimer order where spin correlations within trimers are controlled by the strong intratrimer interactions. Combining the information derived from elastic and inelastic magnetic neutron scattering with group theoretical analysis, a consistent set of intratrimer interactions and ordered magnetic structures is derived. The experiment provides a simple worked example of magnetism associated with interatomic composite degrees of freedom in the extreme quantum limit.en
dc.language.isoen_USen
dc.publisherAmerican Physical Societyen
dc.subjectintratrimer transitionsen
dc.subjectinelastic magnetic scattering cross sectionen
dc.subjectcopper spin-1/2 trimersen
dc.subjectcluster antiferromagneten
dc.subjectspin-trimer antiferromagnetismen
dc.subjectgroup theoretical analysisen
dc.subjectspin dynamicsen
dc.subjectneutron diffractionen
dc.subjectinteratomic composite degrees of freedomen
dc.subject7.5 meVen
dc.subject132.5 meVen
dc.subject125 meVen
dc.subject2.6 Ken
dc.subjectlanthanum compoundsen
dc.subjectgroup theoryen
dc.subjectground statesen
dc.subjectexcited statesen
dc.subjectcopper compoundsen
dc.subjectantiferromagnetic materialsen
dc.subjectLa4Cu3MoO12en
dc.titleSpin-trimer antiferromagnetism in La4Cu3MoO12en
dc.typeArticleen


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